UbuntuHandbook

Install Komodo Edit 8 in Ubuntu 14.04

Last updated: April 23, 2014

This simple tutorial shows you how to install Komodo Edit, the free and Open-Source counterpart of Komodo IDE, in Ubuntu 14.04 Trusty Tahr via PPA.

Komodo Edit offers sophisticated support for all major scripting languages, including in-depth autocomplete and calltips, multi-language file support, syntax coloring and syntax checking, Vi emulation, Emacs key bindings. It provides dynamic language expertise for Perl, PHP, Python, Ruby, and Tcl, plus JavaScript, CSS, HTML, and XML, and template languages like RHTML, Template-Toolkit, HTML-Smarty and Django.

Install Komodo Edit:

Because the editor is available in Launchpad PPA, you can easily install it by running the commands below one by one in a terminal window (Press Ctrl+Alt+T to open the terminal):

sudo add-apt-repository ppa:mystic-mirage/komodo-edit

sudo apt-get update

sudo apt-get install komodo-edit

Once installed, open the app from Unity Launcher or App Menu.

In Howtos komodo edit, Ubuntu 14.04

Ubuntu 14.04: Set Different Wallpaper for Each Workspace

Last updated: April 22, 2014

This simple tutorial is going to show you how to set a different desktop wallpaper for each workspace in Ubuntu 14.04 Unity.

Only have one desktop? Well, you may first enable workspaces by going to System Settings -> Appearance -> Behavior and check the box as the below picture shows.

Now click the new icon on Unity Launcher and you’re able to switch between workspaces.

To set different wallpapers:

1. Open Ubuntu Software Center, search for and install both the Compizconfig Settings Manager and compiz-plugins-extra

The package “compiz-plugins-extra” contains the plugin Wallpaper which allows you to assign multiple wallpapers to your workspaces, with the added bonuses of proper transparency handling and desktop icons (with patches to Nautilus, etc).

2. Open CCSM (CompizConfig Settings Manager) from Unity Dash. Enable Wallpaper plugin and click to go into its settings page.

3. Click the New button and add some wallpapers. Enable Images plugin when it prompts.

Result:

To revert back, just disable the plugin or read how to reset Unity and Compiz Settings.

In Howtos Ubuntu 14.04, wallpapers, workspace

Ubuntu 14.04: Change Login Screen Background & Remove The White Dots

Last updated: July 2, 2016

Want to remove the white dots and set your log-in screen background image different to your desktop wallpaper? Well, this simple tutorial will show you how.

Below steps will give lightdm user access to the X-Server and open dconf-Editor to change the settings of Unity Greeter.

1. Press Ctrl+Alt+T on keyboard to open the terminal. When it opens, run the command below to install dconf-editor:

sudo apt-get install dconf-editor

2. Run command to get the root user privilege:

sudo -i

3. Allow user lightdm to create a connection to the X server:

xhost +SI:localuser:lightdm

4. Switch to user lightdm in this terminal window.

su lightdm -s /bin/bash

5. Now you can start the dconf-editor via this user by running:

dconf-editor

When the tool opens, navigate to com –> canonical –> unity-greeter. Then change the background value to your custom image and disable both draw-grid and draw-user-backgrounds

After all, restart your computer and enjoy!

UPDATE: To revert the settings, re-do previous steps and click “Set to Default” after highlighting the key values in step 5.

For those who get blank screen issue, switch to command console (Ctrl+Alt+F1 ~ F6), re-do step 2, 3, 4, and finally reset the changes via:

dconf reset -f "/com/canonical/unity-greeter/"

In Howtos login screen background, Ubuntu 14.04

Install Gnome Classic Desktop in Ubuntu 14.04

Last updated: April 20, 2014

This simple tutorial is going to show you how to install the Gnome Classic desktop environment in Ubuntu 14.04 Trusty Thar.

Ubuntu 14.04 gets new window decorations inside Unity and so far it does not support changing window control buttons to the right of title bar. So if you want your window buttons on the right, you may switch to the Gnome Classic desktop.

Alt + right-click

Install Gnome Classic:

Press Ctrl+Alt+T on keyboard to open the terminal. When it opens, paste the command below and hit run. Type in your password when prompt.

sudo apt-get update; sudo apt-get install gnome-session-fallback

Once installed, log out the current session. When you’re in log-in screen, click the logo icon and select log in to Gnome Flashback (Compiz) or Gnome Flashback (Metacity).

In Howtos Gnome Classic, Ubuntu 14.04

Ubuntu Tweak 0.8.7 Released With Ubuntu 14.04 Support

Last updated: April 20, 2014

Ubuntu Tweak, the popular Ubuntu configuration tool, has just released version 0.8.7 a few hours ago. According to the changelog, the new release added or fixed:

add support for Ubuntu 14.04 Trusty Tahr
add Support for Minimize from Unity Launcher
add toggle for Nautilus Recursive Search
Fix the nautilus scripts support for Ubuntu 13.10 and later
Going to workspace adjustement automatically add keyboard shortcut for fade screen
Missing options: fonts, desktop icons,window, file manager
Never crash when sources.list is not parsable

Install Ubuntu Tweak 0.8.7 in Ubuntu 14.04:

Ding Zhou, the app developer, has built this release into PPA for Ubuntu 14.04, Ubuntu 13.10, Ubuntu 12.10 and Ubuntu 12.04.

To install it, press Ctrl+Alt+T on keyboard to open terminal. When it opens, run the commands below one by one:

sudo add-apt-repository ppa:tualatrix/ppa

sudo apt-get update

sudo apt-get install ubuntu-tweak

If you don’t want to add the PPA, download & install the deb at here.

In Howtos Ubuntu 14.04, ubuntu tweak

Save Screen Brightness Settings In Ubuntu 14.04

Last updated: September 24, 2014

Laptop users still have the backlight issue in Ubuntu 14.04. Every time Ubuntu boots up you get the maximum level of screen brightness.

Here’s a workaround by adding a startup script which will automatically adjust screen brightness when Ubuntu boots up.

To get started:

Preparation: Open your file browser and navigate to “Computer-> sys -> class -> backlight” directory. You’ll see two or three folders there:

Find Out Actual Backlight Settings Folder

In each folder there’s a file called actual_brightness, you can see its content (brightness value) through the thumbnail icon.

Remember them and do:

Change your screen brightness through Fn + Arrow key.
Check out the actual_brightness files in each folder (Re-open each folder to refresh the value).
Does the value change?
Remember the folder name in which the value of actual_brightness changes.
Replace acpi_video0 in below commands with that folder name

1. Press Ctrl+Alt+T on keyboard to open the terminal. When it opens, run the command below will give you the maximum level of your laptop backlight:

cat /sys/class/backlight/acpi_video0/max_brightness

Mine is 9, so I can set backlight level from 0 to 9.

2. Run the command below one by one. You’ll get the super user privilege and open the /etc/rc.local file, a script executed at the end of each multiuser runlevel, with gedit editor.

sudo -i

gedit /etc/rc.local

Add the line below before the last. Change the number 0 to the brightness level you want.

echo 0 > /sys/class/backlight/acpi_video0/brightness

That’s it. Enjoy!

In Howtos screen brightness, Ubuntu 14.04

Remove Guest Session From Ubuntu 14.04 Login Screen

Last updated: November 6, 2014

Ubuntu 14.04 LTS is Out! One of the first things to do after upgraded to or installed the Trusty Tahr is disable the Guest Session. Here I’ll show you how.

In Ubuntu 14.04 Trusty, the configuration files for LightDM has been moved to /usr/share/lightdm directory. I could only guess that the previous location “/etc/lightdm” is in preparation for giving the login option of logging in to a Unity 8 preview session running on Mir/Xmir.

Anyhow, you can follow the below steps to remove Guest Session in Ubuntu 14.04:

1. Press Ctrl+Alt+T on keyboard to open the terminal. When it opens, run the command below to edit the config file:

gksudo gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf

Type in your user password when it asks. You may need to install gksu first from Ubuntu Software Center.

2. When the file opens, add this line in the end of file and save it.

allow-guest=false

That’s it. Guest Login will disappeared at next boot.

In Howtos remove guest session, Ubuntu 14.04

Install Grub Customizer in Ubuntu 14.04 to Manage Your Grub Bootloader

Last updated: April 18, 2014

Grub Customizer is a graphical tool for managing the Grub boot entries in Ubuntu Linux.

With it, you can set the default OS, add/remove boot entries, change boot order, set an background image, and more.

This simple tutorial is going to show you how to install the Grub Customizer in Ubuntu 14.04 Trusty Tahr from the developer’s PPA.

To get started:

press Ctrl+Alt+T on keyboard to open the terminal. When it opens, paste the commands below and run one by one:

sudo add-apt-repository ppa:danielrichter2007/grub-customizer

sudo apt-get update

sudo apt-get install grub-customizer

Once done, you’re able to open this tool from the Unity Dash or application menu. Enjoy!

In Howtos grub customizer, Ubuntu 14.04

Minimize Application Window on Click For Ubuntu 14.04 Unity Launcher

Last updated: April 18, 2014

One of my favorite Unity features was that we can click on an Unity Launcher icon to minimize an opened application window.

The feature was last supported in Ubuntu 12.04 Precise LTS. Now it comes back in Ubuntu 14.04 Trusty LTS and here is how to enable it.

Once screencast is enough:

To get started:

Search for and install compizconfig settings manager via Ubuntu Software Center. Or install it via terminal (Ctrl+Alt+T) command:
```
sudo apt-get install compizconfig-settings-manager
```
Open CCSM from Unity Dash.
Click “Ubuntu Unity Plugin” and then navigate to the Launcher tab.
Enable “Minimize Single Window Applications (Unsupported)” by check the box after that line

That’s it. Enjoy!

In Howtos Minimize on click, Ubuntu 14.04

Ubuntu 14.04 Trusty Tahr Is Out!

Last updated: April 17, 2014

Ubuntu 14.04 Trusty Tahr, the Long-Term Support release finally is out!

Here’s a summary of the most obvious changes in Ubuntu 14.04 LTS (zdnet.com):

Choice of application menu position
Application click-to-minimise from the Launcher
A wider range of scale for launcher icons – from 16 to 64 pixels
Appearance improvements for very high-resolution displays
Anti-aliased corners on windows
Borderless windows
New language status icon in the top menu bar
Harmonised appearance for the lock screen
System Settings (GNOME Control Centre) replaced by Unity Control Centre
Linux kernel incremented to version 3.13
Multi-task filtering by text input (see our 14.04 beta preview)
Opening a guest session triggers a ‘changes are temporary’ warning
Since Ubuntu One is to close in June, 14.04 will not support Ubuntu One File Services
First time for Ubuntu community flavours (Edbuntu, Kubuntu et al) to also be approved for LTS status
New Upstart — its last outing before Ubuntu switches to systemd